Peter Kuhn

The war on cancer is poised to enter a new phase that promises more precise treatments, fewer side effects and, most of all, more survivors.

And none too soon. Although death rates from many cancers have slowly but steadily declined over the decades, experts agree that current treatments are mostly too blunt, too scattershot and too dangerous for the patients they are intended to save.

Today, treating cancer often means an all-out chemical assault on tumors. Doctors bombard patients' bodies with drugs that aim to destroy cancer cells. But like shelling an entire city to wipe out a few rebels, the strategy leaves civilian casualties in its wake: Standard cancer treatments...

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The war on cancer is poised to enter a new phase that promises more precise treatments, fewer side effects and, most of all, more survivors.And none too soon. Although death rates from many cancers have slowly but steadily declined over the decades,...